aryabhatta 8051 development board with on-board … · 3. 7 segment display 4. lcd interfacing 1)...
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Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 1
ARYABHATTA 8051 DEVELOPMENT BOARD WITH
ON-BOARD USB PROGRAMMER
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 2
1. Descriptions:
With this board you can develop and prototype 40 pin 89S52 and 89s51
microcontrollers. The on board programmer allows easy connection with PC using USB
type B cable for Programming. The Operating Voltage is 9V to 15V DC.
2. Features:
1. Quartz crystal 11.0592 MHz
2. On board programmer.
3. Reset button.
4. Power plug-in jack.
5. GND bus.
6. VCC bus.
7. On board 5V voltage regulator.
8. Power Indicating LED.
9. On board Regulated Power Supply 5V, 12V, GND.
10. High quality PCB FR4.
11. External pull-up resistors for Port 0.
12. Port extensions for all ports.
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 3
3. Specifications:
1. Size: 85 x 62 mm.
2. Supported Microcontroller: AT89SXXXX series.
4. Hardware Details:
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 4
5. Examples:
1. LED blinking
2. Serial Communication
3. 7 Segment Display
4. LCD interfacing
1) LED blinking:
Schematic:
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 5
Code:
#include<reg52.h> // special function register declarations
sbit LED = P2^0; //LED pin
void Delay(void); // Function prototype declaration
void main (void)
{
while(1) // infinite loop
{
LED = 0; // LED ON
Delay();
LED = 1; // LED OFF
Delay();
}
}
void Delay(void)
{
int j;
int i;
for(i=0;i<10;i++)
{
for(j=0;j<10000;j++)
{
}
}
}
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 6
2) Serial Communication:
Schematic:
Description:
Serial data transmitted by 8051 is printed on serial terminal of PC by using
PL2303 orFTDI232 which are usb to ttl convretre.
Code:
#include<reg51.h>
void main(void)
{
TMOD=0x20; // Timer1 Mode2 8 bit auto reload
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 7
TH1=0xFD; // 9600 bps
SCON=0x50; // 8 Data bit, 1 start bit, 1 stop bit
TR1=1; // Timer1 ON
while(1==1)
{
SBUF='R';
while(TI==0); // Pole TI flag for complete transmission
TI=0;
SBUF='O';
while(TI==0);
TI=0;
SBUF='B';
while(TI==0);
TI=0;
SBUF='U';
while(TI==0);
TI=0;
SBUF='.';
while(TI==0);
TI=0;
SBUF='I';
while(TI==0);
TI=0;
SBUF='N';
while(TI==0);
TI=0;
}
}
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 8
3. 7 Segment Display:
Schematic:
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 9
Code:
#include<reg51.h>
void msdelay(unsigned int time) // Function for creating delay in milliseconds.
{
unsigned i,j ;
for(i=0;i<time;i++)
for(j=0;j<1275;j++);
}
void main()
{
unsigned char
no_code[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; //Array
for hex values (0-9) for common anode 7 segment
int k;
while(1)
{
for(k=0;k<10;k++)
{
P1=no_code[k];
msdelay(100);
}
}
}
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 10
4. LCD 16x2
SCHEMATIC:
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 11
Code:
// Program for LCD Interfacing with 8051 Microcontroller (AT89S52)
#include<reg51.h>
#define display_port P2 //Data pins connected to port 2 on microcontroller
sbit rs = P3^2; //RS pin connected to pin 2 of port 3
sbit rw = P3^3; // RW pin connected to pin 3 of port 3
sbit e = P3^4; //E pin connected to pin 4 of port 3
void msdelay(unsigned int time) // Function for creating delay in milliseconds.
{
unsigned i,j ;
for(i=0;i<time;i++)
for(j=0;j<1275;j++);
}
void lcd_cmd(unsigned char command) //Function to send command instruction
to LCD
{
display_port = command;
rs= 0;
rw=0;
e=1;
msdelay(1);
e=0;
}
void lcd_data(unsigned char disp_data) //Function to send display data to LCD
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 12
{
display_port = disp_data;
rs= 1;
rw=0;
e=1;
msdelay(1);
e=0;
}
void lcd_init() //Function to prepare the LCD and get it ready
{
lcd_cmd(0x38); // for using 2 lines and 5X7 matrix of LCD
msdelay(10);
lcd_cmd(0x0F); // turn display ON, cursor blinking
msdelay(10);
lcd_cmd(0x01); //clear screen
msdelay(10);
lcd_cmd(0x81); // bring cursor to position 1 of line 1
msdelay(10);
}
void main()
{
unsigned char a[15]="ROBU.IN"; //string of 14 characters with a null
terminator.
int l=0;
lcd_init();
Admin office: PAP J 131, Telco Road, Bhosari, Pune -411026 .Landmark:- Near Quality Circle forum of India
Contact: +91 8551855050, +91 8551845050.Website / Email: http://www.Robu.in, info@Robu.in
w w w . r o b u . i n | i n f o @ r o b u . i n Page 13
while(a[l] != '\0') // searching the null terminator in the sentence
{
lcd_data(a[l]);
l++;
msdelay(50);
}
}
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